Stop mechanism for cableway carrlages



Feb. 13, 1923.

- w. VENABLE STOP MECHANISM FOR CABLEWAY CARRIAGES 'Filed June 5, 1919 4 sheets-sheet 1 WITNESS 1,445,116 W. M. -VENABLE STOP MECHANISM FOR GABLEWAY CARRIAGES Filed June 5, 1919 4 sheets-sheet 2 1 I N L hN HMW EH 11 11 111 I 11111 11 1 1 1 1 H 1 v IH M 1 .1 M. 1111 1 1 1 1 H 1 11 i 1 1 1 1 3 1 1 R w W.1.1.1.11..H WM

Feb. 13, 1923.

- Feb. 13, 1923." 1,445,116 'W. M. VENABLE STOP MEQHANISM FOR CABLEWAY CARRIAGES Filed June 5, 1919 wmazss 4 sheets-sheet -3' Feb. 13,1923.- 1.445.1 6

- w, M. VENABLE STOP MECHANISM FOR CABLEWAY CARRIAGES Filed June 5, 1919 4 sheets-sheet 4 UNI I" Patented Feb. 13, 1923.

" ogFicE.

WILLIAM M. VENABLE, OF PITTSBURGH, PENNSYLVANIA, ASSIGNCR TO IBLAW-KNOX COMPANY, OF IEITTSBUR-G-H, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

sror MECHANISM ron oannnwny earnerasEs;

.Application filed we 3,

Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Stop- Mechanism for Cableway Carriages, of which the following is a specification. This invention relates to movable 'or adjustable stop devices suitable, for example, in connection with cablew ayttrolleys and load supporting devices of an analogous character. a I I One of the primary objects of my invention is the provision of an improved stop .mechanism so constructed that it maybe vreadily adapted for use at either end of the cable, or more properly speaking, on either sideof the cablewa-y carriage.

Another object of my inventlonis theprovision of an improved stop mechanism designed to relieve the cableway .of the shock incident to the engagement of the respective stops by the cablewaygcarriage.

Still another object of my lnvention is the provision of an improved clutch mechanism operable from the "ground toposition the stops. 1 Y

My invention also contemplates the provision of an improved stop-carrying trolley, and in the combination of such trolley with vthe clutch mechanism.

The foregoing, together with such other objects as may hereinafterappear, I obtain by means of'a'construction which I have illustrated in preferred form in the accom-' panying drawings, wherein:

Figure 1 is a side elevation of a more or less diagrammatic character of a cableway trolley equipment supplied with my improved stop mechanism; Figure 2 is aside elevation of the stop mechanism, drawn on an enlarged scale; Figure 3 is an end elevation of Figure 2; Figure 4: is a fragmentary view taken on the line it-A ofFi'gure Qwith'the clutch in open position; Figure 5'is an end elevation of the stop proper, as adapted for use on one side of the load supporting carnage; and Figure 6 is an end elevation of the stop proper, as applied'onthe other side of the load supporting carriage.

Referring to Figure '1, it -w1ll be 'seen that I have therein illustrated 'in" conventlonal 1919. Serial No. 301,417.

form, a cableway carriage'equipment tom'- pr s ng poles 7, the cable 8,the cableway carriage 9, the load bucket 10, and the load rope of any standard type, but the cableway carriage 9, as shown, is of that type described and claimed in my copending application, Serial No. 219,481,,filed February 27, 1918.

11. The parts thus far referred to may be The carriage 9 is provided at one end with i a latch 12, located above the cable 8, and at .the other end with a latch 18, located below the cable 8, such latches being connected by mtermedlatemechanism 14; adapted to operate the load locking means (not shown).

The latches 12 and 18 are respectively adapted to engage the stops A and B, to which my invention has primaryreference. Since the stops are of counterpart construc tion, but one will be described in detail.

a framehaving forked ends 16 and 17 adapted to be passed over the cable ,8, a pair of sheaves 18, adapted to ride upon the cable, and a pair of rollers 19, engaging the cable from beneath; the clutch mechanism indicated as. a wholeat 7C; and the stop proper, indicated as'a whole at B. Y

The clutch comprises a pair of arms20 hinged together attheir upperends on the pin 21,21nd provided internally with semicircular, cooperating clutch surfaces 22; the sheave 23, keyed to shaft 24, the respective ends of which 'are'oppositely threaded, as indicated in Figure 3; and the swiveled blocks gageme'nt a i a It willbe seen from the foregoing, that whenfthesheave is rotated by the manila rope 2 6, which depends sufficiently far to be within reach fromthe ground, the arms will be brought togetheror separated, according to the direction of -rotation.

In order to facilitate assemblage and that the clutching thrusts may be taken directly by the arms 20, the l'iearing for the swivel pins of the blocks 25 is arranged shown in. Figure 3, from inspection of which it will be seen thatt-he joint betweenthe bearing caps 27 and the ends of the arms 20 are disposed on a bias with respect to the arms 25 with which the shaft 24 has threaded en- 20. By this arrangement the pull is trans- The stop comprises a trolley composed'of jected is the outward thrust incident to the opening of the clutch, which thrust, it will be readily understood is negligible. It will also be apparent that the bearing boltswill be readily accessible.

interposed between the carriage 15 and the clutch mechanism C is a buffer, indicated as a whole at E, said butter comprising a pair of bolts 29, one located on each side of the carriage, each bolt passing through an apertured lug 30, and through an arm 20 (see Figs. 2 and Each bolt carries a spring 31 which bears at one end against one of the lugs 30, and at the other end against an arm. Each bolt is provided with a nut 32 and a but look 33. Since the bolt :29 will be laterally displaced as the clutch arms are opened or closed, I prefer that the bolts shall havea rather loose fit in the lugs 30. At the top one of the arms 20 is provided with an upstanding lug 3a which projects through a slot formed in the bottom of the carriage frame 15. (See Fig. l.) The lug 3+1 serves to maintain the trolley and the clutch mechanism in proper relation with respect to each other.

From inspection of Figures 2, 5, and 6, it will be seen that the stop D comprises a' castinghavin'g a head 36 at one end and a flanged seat portion 87 at the other end, the body 38 of the stop being reinforced by strengthening ribs 39'. The stop is longitudinally slotted at to to receive the cable 8 and it is bolted to an end of the carriage frame 15 by means of four bolts 41. The bolt holes are so located that the stop is reversible and can be applied to the trolley frame either with the groove on the upper side, as shown in Figure 5, or on the lower side as shown in Figure 6. In one position the head 36 projects downwardly in position to receive and be engaged by oi: interlocked with the latch 13, and in the other position it projects upwardly in a position to be similarly engaged by the latch 12. By this simple expedient the stop mechanism can be adapted for use at either end of the cable.

It will be observed that the clutch C is the fixed element of the stop so that when the cableway carriage 9 strikes a stop D, the springs 31 will act as a buffer permitting the trolley and the stop D to yield thereby relieving both the clutch mechanism C, and the cable H of violent shock. Breakage of the cable, which is not at all infrequent in standard equipments, and also breakage of the stop mechanism is thus prevented.

From the foregoing it will be seen that I have provided a simple stop mechanism retains carriage 9 is provided with a sheave 42 adapted to be mountedbetween the forked arms 16 of the trolley carriage (see Fig. 1) in order to prevent the load rope 11 from fouling the stop mechanism. When the stop mechanism is applied on the other side of the cabl'eway carriage, it is of course unnecessary to provide such a sheave.

I claim: i

1. A stop mechanism for ca'bl'eiiay supported load devices -c oiiipi-ising in 'cbinbination a cal'ileclut'chling member, a trolley, a stop memberdetachably secured to the trolley, and a buffer interposed between the clutch and the trolley. p

2. A stop mechanism for cablwayfsup ported load devices comprising in combination a cable clutching member, a tr'dlley member carrying a stop", saidtrolley me-m her being supported from the cable, and. a buffer interposedbetween said members.

A stop mechanism for cableway supported load devices comprising in combination. a trolley carrying a stop moivabl supported on said cable, cable clutchingmember cooperatiiig therewith, and means for maintaining said trolley and its stop and said clutching member in operative relation. I i

i. A stop mechanism for cableway sup ported l'oaddevices comprising a portion adapted to grip the cable, and a portion adapted to be engaged bythe latching-mechanism of the load supporting device, said last portion being mounted for inversion whereby the stop mechanism is adaptedf'to be used at either end of the cable 1dr; on either side of the load supporting device.

5. A stop mechanism for c'able way supported load devices comprising a frame, a clutclnand a latch receivingportioh mounted on the frame for inversion.-

6. A stop element for cablewaysupported load devices comprising in combination a pair of hinged arms having cable clutching portions and means for operating said arms.

7. A stop element for cablew'ay supported oad devices comprising pair of hinged arms having cable clutching portions, a,

shaft having oppositely threaded portions adapted to operate said arms, and 'Iiieans for turning the shaft.

8'. A stop element for cablewayj supported load devices comprising a pair. of hinged arms having cable clutching portions, a compensating member in each arm, "a shaft having oppositely threadedport-ions engaging said compensating members, and means for operating the-shaft,

9. A sto'p'inember for c' bleway supported load devices, said member having a head and means for invertibly mounting said stop member so that in one position the head projects downwardly and in the other position the head projects upwardly.

10. A stop mechanism for cableway supported loaddevices comprising in combination a cable clutching member, means depending from from the clutch for actuating the clutch to engage or release the cable, a stop member, and a bufi'er interposed beio tween the stop and the clutch.

11. A stop mechanism for cableway supported load devices comprising in combination a cable clutching member, means de pending from the clutch for actuating the clutch to engage or release the cable, a trolley carrying a stop member supported from the cable, and a buffer interposed between the stop and the clutch. I

12. A stop mechanism for cableway supported load devices comprising a stop carrying trolley riding on the cable, a cable said first member and movable with respect thereto.

let. A stop mechanism for cableway supported load devices comprising a member adapted to be secured to the cable and a.

latch receiving and" interlocking portion mounted on said member for inversion.

In testimony whereof I have hereunto signed my name,

WILLIAM M. VENABLE. 

